Quote from: geckogroove on July 18, 2011, 02:30:54 PM

Quote from: Bart31 on July 16, 2011, 10:35:39 PM

I tweaked my Asus HD5850 just a little, now doing 345 Mhash/sec with guiminer, win7 32 bits, latest Catalist software from Ati on OpenCL.

my 5850 runs 280mhs stock, windows 7 64bit guiminer opencl

Yeah, the disparity between hash rates on the same cards is kind of perplexing. I see a difference of more or less 100 Mh/s between the lowest rate and the highest rate in some cards. Some cards are genuinely better than others within the same generation (better silicone) allowing for better overclocks while some bitcoin miners are more experienced with bitcoin mining and/or hardware/software setup.